Which of the following logical network topologies is used to provide a secure connection acrossthe Internet?（）

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An administrator is experiencing availability issues on a Linux server. The administrator decides tocheck the server for an IP address conflict on the server. Which of the following commands should the administrator use?（）

来源：考试资料网2018-08-08

Which of the following protocols can be found at the application layer?（）

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Which of the following defines access for a network?（）

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After a baseline check was completed it was noted that the network was working far below the level of the last baseline.
Which of the following should the technician do NEXT to determine where the network problems are occurring?（）

来源：考试资料网2018-08-08